Can you show ads from Casale and FastClick on the same page at the same time? For instance, I may have a 728x90 Casale banner up on the top of the page, but a 160x600 banner from FastClick. Thanks for your help!
Yes, you can. They will even let you default one with the other. Most CPM's are not 100% fill, and they expect you to use other affiliates in conjunction with theirs.
I agree with that. You can. I do it by tiering them so that if one doesn't full all my ad inventory it will show the next networks ads instead of the first networks default ads. Doing this will earn you much more.